You will get high light level if you use 1.5W LED per gallon of water so, if you have a 46G the most you should do is 60W-90W of LEDs assuming some LEDs you will run very low intensity for effect purpose.

Quote:

"wish i could find a low wattage cheap dimmable driver because all i want out of the second kit is moonlighting."

How many watts you need for this? The Dimm4 and my Light Brain Ardunio based controller can drive very low powered moonlight by itself-no need for additional driver saving you a bunch.